Period
to 16 December 2017

The following table provides summary statistics for permanent job vacancies with a requirement for ISDN skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited ISDN over the 6 months to 16 December 2017 with a comparison to the same period in the previous 2 years.

Integrated Service Digital Network (ISDN)
UK
6 months to
16 Dec 2017
Same period 2016 Same period 2015
Rank 1040 994 1120
Rank change year-on-year -46 +126 -92
Permanent jobs citing ISDN 145 204 176
As % of all permanent IT jobs advertised in the UK 0.081% 0.11% 0.082%
As % of the Communications & Networking category 0.53% 0.65% 0.49%
Number of salaries quoted 104 162 158
UK median annual salary £45,000 £45,000 £40,000
Median salary % change year-on-year - +12.50% -
10th Percentile £26,250 £26,750 £20,000
90th Percentile £67,500 £63,750 £57,875
UK excluding London median annual salary £40,750 £42,500 £37,000
% change year-on-year -4.12% +14.86% -0.67%

ISDN is in the Communications and Computer Networking category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies with a requirement for communications or computer networking skills.

All Communications and Computer Networking Skills
UK
Permanent vacancies with a requirement for communications or computer networking skills 27587 31267 35610
As % of all permanent IT jobs advertised in the UK 15.48% 16.88% 16.56%
Number of salaries quoted 22269 25523 29569
UK median annual salary £45,000 £45,000 £45,000
10th Percentile £25,750 £26,000 £25,000
90th Percentile £72,500 £72,500 £71,250
UK excluding London median annual salary £40,000 £40,000 £40,000

ISDN
Job Vacancy Trend

Job postings citing ISDN as a percentage of all IT jobs advertised.

Job vacancy trend for ISDN in the UK

ISDN
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing ISDN.

Salary trend for ISDN in the UK

ISDN
Salary Histogram

The salary distribution of IT jobs citing ISDN over the 6 months to 16 December 2017.

Salary histogram for ISDN in the UK

ISDN
Top 13 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing ISDN within the UK over the 6 months to 16 December 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England -33 142 £45,000 - 13
UK excluding London -7 94 £40,750 -4.12% 6
London +6 52 £53,500 +1.90% 9
South East +47 45 £37,800 -28.00% 2
Midlands +35 16 £50,000 +17.65%
West Midlands +20 12 £50,000 +81.82%
South West +15 11 £60,000 +42.86% 1
North of England -22 10 £36,000 -4.00% 1
East of England -23 9 - -
North West -24 9 £35,500 -5.33% 1
East Midlands +15 4 £47,500 +11.76%
Scotland - 3 - - 2
Yorkshire +30 1 £41,500 +10.67%

For the 6 months to 16 December 2017, IT jobs citing ISDN also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads with a requirement for ISDN.

1 74 (51.03%) VoIP
2 70 (48.28%) Firewall
3 59 (40.69%) Windows
4 58 (40.00%) Cisco
5 55 (37.93%) MPLS
6 53 (36.55%) Active Directory
6 53 (36.55%) ITIL
7 52 (35.86%) WAN
8 51 (35.17%) DNS
9 50 (34.48%) LAN
10 43 (29.66%) Microsoft
11 41 (28.28%) Cisco Certification
11 41 (28.28%) Linux
11 41 (28.28%) Telecoms
12 39 (26.90%) VPN
13 36 (24.83%) VMware
14 35 (24.14%) DHCP
15 33 (22.76%) Windows Server
16 32 (22.07%) Unified Communications
17 31 (21.38%) Data Centre
17 31 (21.38%) PBX
17 31 (21.38%) VMware Infrastructure
18 29 (20.00%) SQL
19 28 (19.31%) Wi-Fi
19 28 (19.31%) Wireless
20 27 (18.62%) SAN
21 26 (17.93%) VLAN
21 26 (17.93%) Skype for Business
22 24 (16.55%) Avaya
22 24 (16.55%) SLA

ISDN
Co-occurring IT Skills by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 26 (17.93%) Skype for Business
2 23 (15.86%) MS Exchange
3 20 (13.79%) IIS
4 6 (4.14%) CMS
5 5 (3.45%) Exchange Server 2010
6 4 (2.76%) Exchange Server 2013
6 4 (2.76%) Office Communications Server
7 2 (1.38%) Exchange Server 2007
8 1 (0.69%) SharePoint
8 1 (0.69%) SharePoint 2010
8 1 (0.69%) SharePoint 2013
Applications
1 14 (9.66%) Microsoft Office
Cloud Services
1 19 (13.10%) Office 365
2 11 (7.59%) PaaS
3 9 (6.21%) Slack
4 7 (4.83%) Amazon AWS
5 3 (2.07%) Microsoft Azure
6 1 (0.69%) IaaS
6 1 (0.69%) SaaS
Communications & Networking
1 74 (51.03%) VoIP
2 70 (48.28%) Firewall
3 55 (37.93%) MPLS
4 52 (35.86%) WAN
5 51 (35.17%) DNS
6 50 (34.48%) LAN
7 39 (26.90%) VPN
8 35 (24.14%) DHCP
9 32 (22.07%) Unified Communications
10 31 (21.38%) PBX
11 28 (19.31%) Wi-Fi
11 28 (19.31%) Wireless
12 27 (18.62%) SAN
13 26 (17.93%) VLAN
14 22 (15.17%) BGP
14 22 (15.17%) DSL
14 22 (15.17%) TCP/IP
15 21 (14.48%) IP Telephony
15 21 (14.48%) OSPF
15 21 (14.48%) SSL
Database & Business Intelligence
1 10 (6.90%) OLAP
2 5 (3.45%) SQL Server
3 4 (2.76%) SQL Server 2005
4 2 (1.38%) MySQL
4 2 (1.38%) PostgreSQL
4 2 (1.38%) SQL Server 2000
4 2 (1.38%) SQL Server 2008
4 2 (1.38%) SQL Server 2012
5 1 (0.69%) Amazon RDS
Development Applications
1 1 (0.69%) MSI
General
1 41 (28.28%) Telecoms
2 11 (7.59%) Games
3 10 (6.90%) Finance
3 10 (6.90%) Retail
4 8 (5.52%) Marketing
5 4 (2.76%) Billing
6 1 (0.69%) Advertising
6 1 (0.69%) Electronics
6 1 (0.69%) German Language
6 1 (0.69%) Italian Language
6 1 (0.69%) Legal
6 1 (0.69%) Spanish Language
Job Titles
1 26 (17.93%) Support Engineer
2 25 (17.24%) Network Engineer
3 20 (13.79%) 3rd Line Engineer
4 15 (10.34%) Consultant
5 13 (8.97%) Senior Network Engineer
6 12 (8.28%) 3rd Line Support
7 11 (7.59%) 3rd Line Support Engineer
8 10 (6.90%) Infrastructure Engineer
8 10 (6.90%) Telephony Engineer
9 9 (6.21%) IT Support
9 9 (6.21%) Software Engineer
9 9 (6.21%) Technology Consultant
10 8 (5.52%) Network Manager
10 8 (5.52%) Senior Software Engineer
11 7 (4.83%) 2nd Line Support
11 7 (4.83%) 3rd Line Infrastructure Engineer
11 7 (4.83%) Office 365 Engineer
12 6 (4.14%) Infrastructure Support
12 6 (4.14%) Juniper Engineer
12 6 (4.14%) Telephony Support
Libraries, Frameworks & Software Standards
1 8 (5.52%) Web Services
2 6 (4.14%) XMPP
3 4 (2.76%) FreeSWITCH
4 1 (0.69%) 802.1X
Miscellaneous
1 31 (21.38%) Data Centre
2 12 (8.28%) Management Information System
3 11 (7.59%) Computer Science
4 10 (6.90%) Analytical Skills
4 10 (6.90%) Cyber Attack
4 10 (6.90%) PKI
4 10 (6.90%) Video Conferencing
5 6 (4.14%) Algorithms
5 6 (4.14%) User Experience
6 4 (2.76%) Clustering
6 4 (2.76%) Driving Licence
7 3 (2.07%) Smart Home
8 2 (1.38%) Fat Client
8 2 (1.38%) Handset
8 2 (1.38%) Thin Client
9 1 (0.69%) IVR
9 1 (0.69%) Linux Command Line
9 1 (0.69%) Smartphone
Operating Systems
1 59 (40.69%) Windows
2 41 (28.28%) Linux
3 33 (22.76%) Windows Server
4 19 (13.10%) Windows Server 2008
5 18 (12.41%) Windows Server 2012
6 15 (10.34%) Windows Server 2003
7 10 (6.90%) Red Hat Enterprise Linux
8 9 (6.21%) Unix
9 4 (2.76%) CentOS
10 3 (2.07%) Windows 7
11 2 (1.38%) Ubuntu
11 2 (1.38%) Windows 10
11 2 (1.38%) Windows 8
11 2 (1.38%) Windows Vista
11 2 (1.38%) Windows XP
Processes & Methodologies
1 53 (36.55%) ITIL
2 20 (13.79%) Network Design
3 15 (10.34%) CRM
3 15 (10.34%) Project Management
4 14 (9.66%) Load Balancing
4 14 (9.66%) Service Management
5 13 (8.97%) Proactive Monitoring
6 12 (8.28%) Disaster Recovery
6 12 (8.28%) Mentoring
7 11 (7.59%) Coaching
7 11 (7.59%) Configuration Management
7 11 (7.59%) E-Commerce
8 10 (6.90%) Business Continuity
8 10 (6.90%) Change Control
8 10 (6.90%) Cybersecurity
9 9 (6.21%) Agile Software Development
9 9 (6.21%) Information Management
9 9 (6.21%) Operations Management
9 9 (6.21%) Presales
9 9 (6.21%) Software Engineering
Programming Languages
1 29 (20.00%) SQL
2 15 (10.34%) C
2 15 (10.34%) C#
3 9 (6.21%) Java
4 5 (3.45%) C++
5 2 (1.38%) PowerShell
6 1 (0.69%) Python
Qualifications
1 41 (28.28%) Cisco Certification
2 24 (16.55%) Degree
3 23 (15.86%) CCNA
4 18 (12.41%) CCNP
5 12 (8.28%) CCIE
6 11 (7.59%) Microsoft Certification
7 8 (5.52%) MCSE
8 7 (4.83%) Security Cleared
9 6 (4.14%) ITIL Certification
9 6 (4.14%) SC Cleared
10 5 (3.45%) VMware Certified Professional (VCP)
11 4 (2.76%) MCITP
12 3 (2.07%) Computer Science Degree
12 3 (2.07%) MCP
13 2 (1.38%) CCA
13 2 (1.38%) Citrix Certification
13 2 (1.38%) Linux+ Certification
13 2 (1.38%) LPIC
13 2 (1.38%) MCTS
13 2 (1.38%) RHCE
Quality Assurance & Compliance
1 24 (16.55%) SLA
2 10 (6.90%) ISO/IEC 27001
3 1 (0.69%) PCI DSS
System Software
1 53 (36.55%) Active Directory
2 31 (21.38%) VMware Infrastructure
3 18 (12.41%) Terminal Services
4 12 (8.28%) VMware ESXi
5 8 (5.52%) vSphere
6 4 (2.76%) Firmware
6 4 (2.76%) Hyper-V
6 4 (2.76%) Kamailio
6 4 (2.76%) XenApp
7 1 (0.69%) Microsoft Virtual Server
7 1 (0.69%) Virtual Servers
7 1 (0.69%) XenDesktop
Systems Management
1 20 (13.79%) Cisco CUCM
2 10 (6.90%) WSUS
3 9 (6.21%) Cisco Prime
3 9 (6.21%) SolarWinds Orion
4 6 (4.14%) Cisco UCCE
4 6 (4.14%) Cisco UCCX
5 5 (3.45%) Backup Exec
5 5 (3.45%) SCCM
6 4 (2.76%) FortiGate
7 3 (2.07%) NetBackup
7 3 (2.07%) SCOM
7 3 (2.07%) vCenter Server
8 2 (1.38%) Netcool
8 2 (1.38%) XenMobile
9 1 (0.69%) CA Spectrum
9 1 (0.69%) Microsoft Data Protection Manager
9 1 (0.69%) ServiceCenter
Vendors
1 58 (40.00%) Cisco
2 43 (29.66%) Microsoft
3 36 (24.83%) VMware
4 24 (16.55%) Avaya
5 16 (11.03%) Juniper
6 15 (10.34%) SolarWinds
7 13 (8.97%) CheckPoint
8 10 (6.90%) Apple
8 10 (6.90%) Blue Coat
8 10 (6.90%) F5
8 10 (6.90%) NetApp
9 9 (6.21%) Barracuda Networks
9 9 (6.21%) Palo Alto
10 7 (4.83%) Meraki
10 7 (4.83%) Mitel
11 6 (4.14%) BT
11 6 (4.14%) Forcepoint
11 6 (4.14%) IronPort
11 6 (4.14%) Panasonic
11 6 (4.14%) Polycom